Memo to head of HR to convince company to invest in a new HR

Write a briefing memo to convince the management to invest in a new HRIS. Imagine you are the head of the HR department in a company. Your department plans to propose an HRIS initiative to management. As the department head, you will prepare this briefing memo. Make sure you include the following points in the memo:

What is an HRIS? What functions must it accomplish and what basic types of HRIS software are available?
What organizational factors might be affected by the quality of the HRIS being developed?
What are the benefits and costs associated with implementing this new HRIS?